Trolley control



April- 5 1927. 1,623,430

J. a. MQMAKHN TROLLEY CONTROL FiledMarch 23, 1925 Z'Sheets-Sheet 1 April 5 1927.

J. G. MQMAKIN TROLLEY CONTROL Filed March 23, 1925 2 Sheets-Sheet 2 p zzzmlw Patented Apr. 5, 19 27. 7'

UNITED S AT S JULI us GRANT MeMAxIN, or CHiCAGO, ILLINOIS.

TBOLLEY CONTROL.

Application filed March 23, 1925. Serial No. 17,502.

which will become more apparent in the following. description and disclosures, this 1n-' vention comprises the. novel structure and combinations here nafter clescrlbed and more particularlypointed out and definedin the appended claims.

In.the'accompanying drawings which 1 llustrate a preferred embodiment of this 'invention andin which similar reference numerals refer to similar features in the different views:

Figure lis a fragmentary elevational view of a street car equippedwitlrmy novel trolley control. 3 j.

Figure 2 is an enlarged elevational v ew 7 of the contact roller.

2 v trolley rod.

' like, attached to the to Figure 3 is an enlarged elevational view of the manual control for reversing the Figure t is an enlarged fragmentary sectional View through the end of the car showing a part of the control -mechanism taken upon the line IVIV of Figure 6. p

Figure 5 is'an enlarged sectional view throughthe trolley rod support. v

Figure 6 is an enlarged top plan view of the trolley rod support. a

Figure 7 is an enlarged elevational view of part of the control mechanism.

As shown on' the drawings:' a Referring to the drawlngs, there is shown a fragmentary portion of a street car 1 hav-- ing a cylindrical trolley rod support 2 upon its top, upon which a trolleyrod 3 is pivoted. This trolley rod is provided upon its free end with a contact worm roller 1 which automatically centers itself through the grooves 5 which engage the contacting wire. This roller tapers toward its axis from the central portion so as to clear a cross wire.

In referring to the drawings, especially to Figures 5 and 6 it will be noted that the trolley rod is pivoted upon one side of the support 2, which in turn is swivelled in a bearing formed in a hollow stand 6 or the of the car and having a flanged margin for supporting the rod when itdrops. In the present instance,

M lower.

the stand 6 is provided with a cylindrical bearing aperture through which a cylindrical hub 2 on the support extends; A nut 8 is attached to the lower end of the hub for re-' tainingthe same in position and'antifriction thrust bearings 9. are disposed on oppoe site sideslof the standG. A peripheral groove 10 is formed in the support 2 for receiving two operatingcables 11, the ends of which are attached to the support 2, and

to the pulley 12 (Figure journalled-upon the outer end of astud13 one end wallof-the car.

The baseof the trolley rod is provided projecting through with a substantially arcuate portion 14 provided with agroove for receiving a cable 15 which is suitably fastened' to the rod '3 above its pivot point; This cable 15' extends through an axial opening 16in thesupport 2 and is trained over suitable guide pulleys 17 and 18,.the former carried by the support 2 adjacent the upper end 'of theopening'16, the latter being supported on the stationary stand 6; This cable is attached to one end of a coil spring 19. A cable 15"" is attached to the other end of the spring'19 (Figure 3) and extends down over theend of the car which is provided with suitable guide pulleys 20'fon the purpose, and is fastened to a small stud 13.

The hub of the pulley 12 extends through the end wall 21 of the car as shown in Figure 4. A gear22 is keyed upon the inner endof said hub. A gear 23 (Figure 7 meshes with the gear 22 for the purpose of shaft are of polygonal form for'receiving a wrench or crank wherebythe gear 23 may pulley 21 keyed uponfthe be actuated either from Within or without the car.

Keyed upon the shaft 13, adjacentthe ioo -gear"22 is a disc 25 having: a-notch 26" adapted for receiving the end of apawl'27 I pivoted intermediate its ends by means of a" This" pivot 28' to the end wall 21 of the car. W pawl has a depending tail 2"? which is adapted to be engaged by a cam 29 formed integral with or fixed to a disk 29 having a peripheral cut out portion 80 forming terminal shoulders '31 for engagement with a stud 32 projecting from the end wall of the car for limiting the rotation of the cam, and

no I

holding the same in certain predetermined ,1 positionslf..'l he ,eam 2 9 and disk 3.9 ,are securedg npon; a: shaiti 33 i which, extends,

" through the end Wall'2l of the car '.;both ends of said shaft .beingptpolygonal form similar to the sha-ft*24 for receiving "the e, same rench or crank. 'The ends of ,the

shaft 13 are also of similar polygonal'torm' for reeeiving'thesame rench or crank.

The-upper portion ofthe pawl 27 is provided ,with' an arm :27 rrzto-whioh the core 34:

; ofajsolenoid 35 :is piwotall-yieonneetedi "This ,soleneidi wnnectedflvitzhpa bar .36 upon athe .nppenend ;o ;fsqthe trolley lrod :through a V C LQU EQDBZ; {Elle ,ends the :bar project 7 beyondithe ndsofthe irojller diname;38 upon the upperend {ofthe mod' {Accordingly it their goklerifliesoif thepfeedymire the=bar 36 7 lwilleome' in contact therIewithand energize d releasing the pulley Q12 allowing (the v ezt1'o1-1ey:-rod gto drqp. 'A=spr i-1,1 g.-38 (:Eigure 7) be s ga nst thepawlafor:yieldingly .red mining th $fim i 'fipe tt iue zposition.

Whe sit-is. idesiredito lower the trolley 7 rod, the, operator will apply vhis Crank :to

7 either ,theougter gor inner ,end of the shaft and rotate the .eam for disengaging the f-Piuvl tromithe disk 25 whereby the trolley rod-will automatically drop Joy, gravity. In its' l wered position, the trolley .IiOd may :be

readily reversed by rotating the support 2 through ,a,l;8 il,by rotating the pulley 12f -1Whl0h may bexmanually done Efrem Without the :Carby graspnig the pulley directly 1 ,1

, r maybedene from withinjthe 0,311 by rotating thef gear'23 in ,tl e properdireotion.

'Dhe troJIey, support ,2 anay also ,be rotated i i he ame meme" in se ne eve e W or the ;ike,-to mainta n the roller in contact withthe feed Wire,

' T e trel ev, mod "3 ma i e l t by-1 0.-

npon-the ,pulley 21* ,asis obvious.

" i d enelz ee tl eeel eei o w e te esfi nete ien efthe 41am w lif imi d-by he "iq d te hm de 31 rel eg ee "that: the the Q am-Q q u i wlq -s se '1 and that theiupper'shoulder 31 onthe cam eng es ,the ;stud 132;and limits ,sueh elock ;wise'.rotat,ion. MZhenHthe Cain- 29 is grotated i f 1 wider s ul' y f t e W r th .ro'e 6:wf1- s me n i e li ae s with sta we l- 2: u sebyztl t e zv e w l b nd. w d: t tdwpji y enemywe: 9; igu 4 W ih zh mete in a .eloek-wise direction to release the pawl,

: said cable:

ebb ng 8 vrma y tend-s il a e .F-rqm l lQ Q I a that the ioperator mayread ly eont ol the trolleY 'lfQd from Within or Without the car t w 1. n re il and that mechanism ,has been provided for automatically releasing the rod if it flies off .the wire.

' 'I am aWare that many changes may be made and numerous d etails of construction may be Varied through a ide range With- ;out departing from ;the principles oftliis "invention, and *rI-there-ifore do not :punpose limiting the patent granted chereomjotherr Nvise than necessitated by the prior art.

Iclaimaas myinyention: a 1. in a control 30f :the ,class .1deseribed,la

support, atrolley rod pivoted upon said support, a cable for holdingsaidfllod inieleva ted position, iaipul-ley (tor Winding said ea'bleeto theselenoid -for ithdrawingathe'parwl 27 ;putit'undemsupporti-ngztensiom'a ipaiwl for Lniaintaining said :pulley under tensiomiand a solenoid energized when sa d trolley rod :leaneskthe Wire tor releasing said .pawl gto permit the trolley rod to drop.

ananual means operable fnom the inside Q1 7 the outside paw-l.

3. In a bearing standga rotatable membejr ionsaid F011: the ear ier releasing said device ot the 'class' deseniibed stand, a trolleyliod pivoted to said nember and having a base with an, ancua'te portion,

Overv a vinxli -i rt pertien en hr ngh aid rotatable member, andl means .ifior, eperat lng a cable attached tosa-id rod andeXtending g 4.'The combination with ,a ;trol;ley,!cai, 35f I e rint s pp r th r en, e tr l' eyimd :;pivoted to said gSlghpPQIYt, qfishles attached gtO said support, a cable gattaehed gto's'aid trolley ithout the ,ca

(ling-said support and trelley rod.

fior controlling said 1CmblSi h inbme ie wi h a zo l y Ice-11, tot rotatable support vtiheneon, a tnolileyuyqd pivoted :to said supp out, and meansa opjeligibleJr from within or @VlthOMt the ear for oontnoL,

Yr Ln testimony wlg ereot I have hereunto.

,subsoribed -my name,

ULIUS GRANT 

